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T O P I C R E V I E W

SpaceAholic

***SOLD***

Plug assembly application was to support acceptance testing of the 16 Marquardt R-4D reaction control engines onboard each Lunar Module (plug bears GAEC inscription distinguishing unit from those used in support of the Service Module RCS engines). Plug center channel supporting purging of hypergolic propellants.

Second image shows the plug installed in an R-4D (engine not included in this sale).